反应的

Formyl-3-acetyl-4-methyl-5-carbobenzoxypyrrole (6) was synthesized via the selective oxidation of 2,4-dimethyl-3-acetyl-5-carbobenzoxypyrrole (5), which was produced from acetylacetic benzylester (1) via nitrosation, reduction and addition-cyclization with acetylacetone. The total yield of the product was about 34%.

以乙酰乙酸苄酯(1)为原料，经过亚硝化、还原、与乙酰丙酮加成环化生成2， 4-二甲基－3-乙酰基－5-苄氧羰基吡咯(5)，通过选择性氧化反应制得目标化合物2-甲酰基－3-乙酰基－4-甲基－5-苄氧羰基吡咯(6)，反应的总收率约为34%。

The carboxyl groups of HPAM replace the H〓O ligands of AlCA, which results in the formation of HPAM-AlCA gel.

首次用实验证明了：HPAM大分子中与AlCA反应的基团为羧基，酰胺基不参与交联反应。

The selected alkylogen shall not react with magnesium in the mode of Grignard reaction.

结果表明：将镁、有机醇以及不与镁发生&格式反应&的卤代烷相互作用可迅速发生反应形成新型含镁络合物溶液。

HCo 〓-catalyzed hydroformylation and isomerization of allene and propyne Allene hydroformylation favors the linear anti-Markovnikov product in high regioselectivity both kinetically and thermodynamically. The origin of this regioselectivity comes from the enhanced stability of the η〓-allylic intermediate (η〓-CH〓CHCH〓 Co 〓.

HCo〓催化的丙二烯和丙炔氢甲酰化反应及异构化反应 HCo〓催化丙二烯氢甲酰化反应的区域选择性主要由不可逆的丙二烯插入步骤决定，动力学和热力学因素都有利于形成anti-Markovnikov中间物种(η〓-CH〓CHCH〓)Co〓，形成Markovnikov中间物种Co〓是不具有竞争性的。

Some new results are obtained from the studies: 1 a novel thermokinetic research method, the characteristic reduced parameter method, has been proposed, and the kinetics of oxidation of benzoquinone by hydrogen peroxide has also been investigated with this method; 2 the kinetic mathematical models that the metallomicelles made from the mono-nuclear or dinuclear complexes and surfactants catalyze the phenolic derivant oxidation have been established respectively; 3 the feasibility and mechanism that the metallomicelle, a mimetic model of peroxidase, catalyzes the phenolic derivant oxidation has been discussed.

研究得到如下新的结果：(1)提出了一种新的热动力学研究法——特征对比参量法，用该法研究了过氧化氢氧化苯醌反应动力学；(2)分别建立了由单核和双核金属配合物与表面活性剂形成的金属胶束催化酚类氧化反应的动力学数学模型；(3)探讨了金属胶束模拟过氧化物酶催化酚类氧化反应的可行性及其机理。

Epoxy acrylic resin and epoxy monoacrylate resin were synthesized from biphenol A epoxy resin and acrylic acid , then a new UV-curing resin was synthesized through the reaction of them and maleic anhydride.

本文先采用双酚A环氧树脂和丙烯酸合成了环氧丙烯酸酯和环氧单丙烯酸酯，再以它们和顺酐作为反应的原料，进行反应最终合成了一种新型UV固化树脂。

The reaction of carbodiimide 14 with various neucleophiles was investigated. The selectivity of cyclization of the carbodiimide 14 with NH_3, RNH_2, R_2NH and NH_2NH_2 were studied, some of the gualidene-type intermediates were isolated and the possible mechanism was suggested.

探讨了碳二亚胺14与各种亲核试剂如NH_3、RNH_2、R_2NH以及水合肼的成环反应的选择性，并分离得到了部分胍中间体，提出了反应可能的机理，对反应的选择性进行了合理的解释。

In the presence of acetic acid and polyethylene glycol, anthracene reacted with ammonium ceric nitrate and sodium bromate to form anthraquinone.

在醋酸、聚乙二醇存在下，蒽与硝酸铈铵和溴酸钠反应生成蒽醌，聚乙二醇作为相转移催化剂可以提高反应的选择性。

As concerning synthesis of 2-ethylhexyl chloroacetate, effects of catalyst dosage, molar ratio of 2-ethylhexanol to chloroacetic acid, reaction time, dosage of water entrainer on esterification rate were studied.

将此固体超强酸酯用于氯乙酸和异辛醇合成氯乙酸异辛酯的酯化反应，考察了异辛醇和氯乙酸的摩尔比、催化剂用量、反应时间、带水剂环己烷的用量对酯化反应的影响。

The aim was to build an optimal cpSSR-PCR system for Jatropha curcas Linn.

建立麻疯树cpSSR-PCR反应的最佳反应体系。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。